Thank you very much hdb,

but again you have to forgive my ignorance on this, I got lost in incorporating your code with input and output file arguments. :(

Please bear with me, I just started studying perl 2 days ago.

use strict;
use warnings;

my $infile = $ARGV[0];
my $outfile = $ARGV[1];

open my $in,   "<",  $infile       or die $!;
open my $out, ">", $outfile    or die $!;

sub printdata {
        my $data = shift;
        $$data{"User-Agent"} //= "--";
        print join "|", @$data{ ( "Arrival Time", "From", "To", "User-
+Agent" ) };
        print "\n\n";
        %$data = ();
}

my %data;
my ($item, $value);
print "Arrival Time|From|To|User-Agent\n\n";
while(<$in>){
        chomp;
        next unless ($item, $value) = /^(.*?): (.*)/;
        printdata \%data if $item eq "Arrival Time" and %data;
        $data{$item} = $value;
}
printdata \%data;

close $in;
close $out;

[download]

In reply to Re^2: Arranging multiple lines by r2ro
in thread Arranging multiple lines by r2ro

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.